Results 111 to 120 of about 6,728 (264)

Mapas de ruido: mecanismo de control del ruido ambiental

open access: yesECA Sinergia, 2012
Los primeros mecanismos de control del ruido ambiental fueron los mapas acústicos. La Directiva Europea 2002149/CE del Parlamento Europeo y del Consejo de Evatuacián y Gestión del Ruido Ambiental, exige, a los estados miembros,  se midan los niveles de ...
Kelvin Chávez García
doaj  

Monolithic Oxidation Enables Ultrathin Vertically Graded Tantalum Oxide for Low‐Voltage, Low‐Variability Memristive Switching

open access: yesAdvanced Functional Materials, EarlyView.
Monolithic UV‐ozone oxidation of Ta forms an ultrathin Ta2O5/TaOx bilayer enabling resistive switching with a vertical defect gradient. A stoichiometric surface layer over an oxygen‐deficient sublayer promotes localized filament nucleation near the top interface, enabling low‐voltage operation, and reduced cycle‐to‐cycle variability.
Seunghoon Yang   +11 more
wiley   +1 more source

Ambient‐Stable Transparent P‐Type CuI Transistors Via Room‐Temperature Pulsed Laser Deposition

open access: yesAdvanced Functional Materials, EarlyView.
An in situ PLD fabricated AlOx${\rm AlO}_x$/CuI/AlOx${\rm AlO}_x$ sandwich structure enables stable CuI TFTs with a field‐effect mobility of 2.3 ±$\pm$ 0.7 cm2${\rm cm}^{2}$ V−1${\rm V}^{-1}$ s−1${\rm s}^{-1}$ and excellent ambient stability. Complementary inverters based on CuI:Rb and ZnO:Al exhibit rail‐to‐rail voltage transfer characteristics and an
Yang Chen   +5 more
wiley   +1 more source

Ventajas del uso de la inyección electrónica en Cuba para vehículos diesel ligeros. // Advantages of injection electronic control systems for cars with Diesel engines.

open access: yesIngeniería Mecánica, 2002
Se presenta un análisis sobre las ventajas que brinda el control electrónico en la inyección Diesel en vehículos ligeros enfunción de las condiciones de clima y explotación en nuestro país.
J. L. Reyes González   +2 more
doaj  

Semiconducting Polymers Post‐Functionalized With Ureido‐Pyrimidinone for Robust Stretchable Transistors

open access: yesAdvanced Functional Materials, EarlyView.
The design of intrinsically robust stretchable semiconducting polymers was achieved through OTBS‐mediated post‐functionalization of PDPP2T side chains with UPy units, generating dual hydrogen‐bonding motifs comprising weaker urethane linkages and strong quadruple UPy interactions along the long alkyl side chain, which is crucial for achieving desirable
Dinda Bazliah   +7 more
wiley   +1 more source

Mechanistic Control of C─H Bond Activation and C─C Coupling in Light‐Driven Methane Conversion to C2+ Products over Multifunctional Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Methane photocatalytic activation under mild conditions remains a formidable challenge in the synthesis of solar fuels. In this review, we emphasize the growing importance of multifunctional materials and hybrid systems within a unified mechanistic framework that integrates selective C─H bond activation, formation and control of intermediates, C─C ...
Di Hu   +5 more
wiley   +1 more source

[Environmental medicine and AI, migration, and emerging and reemerging diseases in Mexico]. [PDF]

open access: yesRev Med Inst Mex Seguro Soc
Rivera-Silva G   +2 more
europepmc   +1 more source

Tissue‐Adhesive Fabric‐Based Bioelectronics for Wearable and Implantable Applications

open access: yesAdvanced Functional Materials, EarlyView.
An implantable and wearable bioelectronic textile (iTextile) is introduced as a unified platform bridging wearable and implantable systems. By integrating a self‐healing polymer, stretchable silk fabric, conductive composite electrodes, and an adhesive hydrogel, the platform enables conformal, stable interfacing with soft tissues. The iTextile supports
Soojung An   +7 more
wiley   +1 more source

Heavy Metal Contamination in Edible Species from Quintero-Puchuncaví Bay: Risks Associated with the Icon Industrial Complex in Central Chile. [PDF]

open access: yesToxics
Curaz-Leiva S   +11 more
europepmc   +1 more source

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